Damper-regulator.



CHARLESO. KOSTER, OF NEW YORK, N. Y.

DAMPER-REGULATOR.

No. s'saess.

Specification of Letters Patent.

Application filed September 2,-1907. Serial No. 394,265.

To all whom it may concern:

Be it known that I, CHARLES C. KosTER, a citizen of the United States, and a resident ofthe city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Im roved Damper- Regulator, of which the follbwing is a full, clear, and exact description.

The invention relates to damper regulators, such as shown and described in the Letvters Patent of the United States No. 486,345,

granted to me November 15, 1892.

The object of the present invention is to provide a new and improved damper reguator for use on steam boilers, furnaces, heaters and the like, and arranged toaccurately and automatically adjust the damper with a view to control the burning of the fuel and the generation of the steam in the boiler.

The invention consists` of novel features and parts and combinations of 'the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawing forming a part of this specification, in which the figure is' a sectional side elevation of the improvement as a plied to the damper in the smoke stack of a oiler.

In the casing A of the damper regulator is arranged concentrically a vertically disposed cylinder B, in which reciprocates a piston C having its piston rod D extending upwardly through the upper head B of the cylinder B, the outer end of the said piston rod D being connected by a link E wlth an arm F held on the pivot F2 of the damper F, shown ap'- plied in the smoke stack G of a boiler G of any approved construction.

The cylinder B has its lower head'B2 provided With an aperture B3, controlled by a needle valve H, screwing in the lower head A of the casing A, to control the amount of Water passing from the casing A through the opening B3 into the cylinder B, to act on the piston C therein.

In order to render the piston C as tight as possible in the cylinder B, the bottom of the plston is provided with a rod C carrying a spring C2 pressing against the under side of an apertured disk C3, resting on rubber rings C4, inter osed between the disk C3 and the under si e of the piston C. Now water entering the lower end of the cylinder B can pass by way of the apertures in the disk C into the space surrounded by the rubber rings C2, so that the latter are expanded, that is, are pressed iirmly in contact with the inner surface of the cylinder B, to render the piston C as tight as possible. Now the water under pressure. in the casing A exerts its force against the iston C, so as to push the same upward, andP in doing so .the damper F is more or less closed, according to the amount of travel given to the piston C by the pressure of the water. Thewater in the casmg A is pressed on by steam from the boiler G, and when the pressure on the water falls then the piston C 1s returned by a weight D secured to the outer upper end of the piston rod D. A spring D2 1s coiled on the lower end of the piston rodD and rests on the piston C, to form a cushion when the piston C moves into an uppermost osition, as the spring D2 then abuts or stri es the head B.

In order to control the steam passing from the boiler G into the u per end of the casing A, a valve I is provide having its valve casing I secured to the upper end A2 ofthe casing A. The valve caslng I is connected by a nipple J with a separating tube K, provided at its bottom with a drain valve K, the said tube being connected to a i e L having a valve L', and connected witlli tIlie steam compartment of the boiler G. Now steam from the steam compartment of the boiler G can pass by way of the pipe L into the tube K, in

which any impurlties carried along by the.v steam are separated from the same and settle in the bottom of the tube, to be drained therefrom by the operator opening the valve K whenever it is deemed necessary. 4The steam from the tube K passes by way of the nipple J and the valve into the upper end A2 of the casing A, to condense therein and to forma permanent body of water for use in actuating the piston C Whenever the steam pressure 1n the boiler G rises above a normal pressure. The valve I is preferably in the form of a cylinder having its lower porti n I2 reduced to allow the steam to pass to a port I3 leading into the upper end A2 ofthe casing A, the reduced portlon I2 being grooved, to prevent dirt from passing to the valve seat. The valve body I is also provided with an exhaust I4 normally in register with the port I3, so as to allow steam to escape from the casing A when the valve I is in a closed or lowermost position, Normally the valve I is held in a closed position by the action of a stem N, pressed on by a lever yO, carrying a Patented May 5, 1908.

weight O the head I5 of the valve then resting on top ofthe valve body I.

A s ring P connects the lever O with a lever connected by a chain R with the weight D, so that when the valve I is raised by excess of pressure and admits steam to the up er end of the casing A, raising the piston and the weight D, then a downward pull is exerted on the lever O through the chain R, lever Q and spring P, closing the valve I adually, so as to prevent too sudden closing of the dam er F when steam is admittedby the valve to the upper'end of the casing A,

From the foregoing, it will be seen that the damper F is normally held in open position, and when the pressure of the steam in the boiler exceeds a normal pressure, then the valve I is-lifted and steam is gradually fed into the upper end of the casing A, for the.

steam to press on the body of water contained therein, the pressure of the water being exerted against the under side of the vpiston C, to raise the same and to causeclosing of the damper F, as previously explained. The equalizlng device, consisting of the members P, Q and R, and connecting the ,lever O with the weight D', acts to prevent too sudden closing of the damper F, as it is essential that the damper F should be closed gradually to insure proper burning of the fuel in the ire box of the boiler.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A damper regulator, comprising a casing containing water and connected with boiler pressure, to exert pressure on the water in the said casing, a cylinder within the said casing and having an opening at its lower end communicating with the said casing, a valve at the lower end of the -casing and extending into the same for controlling said opening, a iston movable in the said c linder in one 'rection by the pressure of t e water, and a connection between the piston and the damper to actuate the latter.

2. A damper regulator', comprising a casing containing water and connected with boiler pressure, to exert pressure on the water in the said casing, a cylinder within the said casing and in communication at its lower end with the said casing, a piston movable in the said cylinder in one direction, cushioning means on the lower part of the piston rod within the casingfa connection etween the piston rod and the damper to actuate the latter, and a weight on the iston rod ofthe said iston for returning the atter on a decrease o the pressure on the piston by the water.

'3. A damper regulator, comprising a casing containing water, a pressure valve connected with the uplper end of the saidcasing and connected wit boiler pressure to exert steam compartment of the pressure on the water in the said casing, a cylinder within the casing and having its lower end located adjacent to the lower end of the casing and provided at said end with an opening communicating with the casing, a valve in the lower end of the casing for controllin said opening in the cylinder, a piston movabgle in the said cylinder in one direction by the pressure of the water, and a connection between the piston and the damper to actuate the latter.

4. A dam er regulator, comprising a casing filled Wit water, a valved connection between the said casing and the steam compartment of the boiler, a cylinder within the said casing and having its lower end provided with a valve seat openin into the casing, a needle valve screwing in t e lower head of the casing Jfor controlling the said valve seat, a piston movable in the' cylinder, a Weight held on the piston rod of the said piston, a connection between the piston rod and the damper to be regulated, and a connection between the said weight and the valve in the said valved connection.

5. A dam er regulator, comprising a casin a cylin er in the casing, a piston movab e in the said cylinder and connected with the damper to be regulated, and a controlling valve having a valve and a valve body connected with the said casing and with the steam compartment of the boiler, the said valve having a reduced lower portion provided with annular rooves.

6. A damper reguator, comprising a casing, a cylinder in the casing, a piston movable in the said cylinder and connected with the damper to beregulated, and a controlling valve having a valve and a valve body connected with the said casin and with the oiler, the said valve having a reduced lower portion provided with annular grooves, and the said valve body having an outlet adapted to be connected with the said casing to allow esca e of the steam from the casing when the va ve is seated.

7. A damper re ulator provided with a casing, a cylinder t erein and opening at its lower end into the said casing, a piston in the said cylinder and connected with the damper, the piston being rovided with a bolt Cproj ecting from its un er face, an aperture disk through which said bolt extends, a spring carried by said bolt and pressing against the under side of said apertured disk, and rubber rings interposed between the apertured disk and the under side of the piston.

8. A damper regulator, comprising a casing, a cylinder in the casing, a piston movable in the said cylinder and connected with the damper to be regulated, a vertical tube connected with a steam supply ipe, a control- 'ling valve having a valve bo y communicating with the upper part of saidcasing, the

vso

valve body also communicating with the upper part of said tube, and a valve in sald valve body andcontrolling the communication between the said -tube and the upper part of said casing. A

9. A damper re ulator, comprising a casing, a cylinder in t e casing having an opening in its lower end communicatin with the casing, a piston movable in the sai cylinder, and connected with the damper to be regulated, a vertically arranged tube connected with a steam supply, a controlling valve having a valve body communicating with the' upper endof said casing, the lower ortion of said valve body communicating wit the said tube, a valve in said valve body and controlling the communication between the said tube and the upper end of said casing, the said valve having itslower portion reduced and provided with grooves, and a valve Jfor controllin the opening in the lower end of said cylin er.

10. A damper re ulator, comprising a casing, a cylinder in t e casing and having an opening at the lower end. communicatin with the casing, a valve for controllin sai opening, a piston movable in the said cy inder and connected with the dam er to be re ulated, and a controlling valveiaving a va ve body communicating with the upper part of said casing and also communicating witha steam supply pipe, and a valve in said valve body for controlling the passage of steam to the upper end of said casin 11. A damper regulator or steam boilers and the like, comprising a cylindrical casing, a cylinder in the casing and having an opening at the lower end thereof communicating with the casing, a valve for controllin said opening, a piston movable in the cy inder and connected with the damper to be regulated, a verticall arranged tube having a drain valve in its ottom, the said tube being connected near its upper end with a valve controlled pipe leading from the steam comartment of the boiler, a controlling vvalve aving a valve body connected to the upper part of said cylindrical casing and having a port leading into the said casing, a nipple connecting said valve body with the upper end of said tube, a valve in said valve body for controlling the communication between the said tube and the casing, the said valve having its l'ower end reduced and rovided with grooves, and means for norma ly holdthe said valve in a closed position.

n testimony whereof l have signed my name to this specication in the presence of two subscribing witnesses.

' A CHARLES o. KosTER.

Witnesses: l

v J. W. NEWTON,

JAMES F. BREcKwELL. 

